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Finding the Fourth Proportional to 380,863.77, 525,319.07 and 251,652.57

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Solution

The fourth proportional to 380,863.77, 525,319.07 and 251,652.57 is: 347,100.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    380,863.77 : 525,319.07 = 251,652.57 : x
  2. Step 2: Convert to fraction form
    380,863.77/525,319.07 = 251,652.57/x
  3. Step 3: Cross multiply
    380,863.77x = 525,319.07 × 251,652.57
  4. Step 4: Simplify right side
    380,863.77x = 132,197,892,777.25
  5. Step 5: Solve for x
    x = 132,197,892,777.25/380,863.77
  6. Step 6: Final answer
    x = 347,100.21

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.